U135B Code - Lost Communication With Sunload Sensor
Quick Answer
The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Control Module Setting the Diagnostic Trouble Code (DTC), Control Module harness is open or shorted, Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U135B indicates Lost Communication With Sunload Sensor.
- Common causes
- Common causes include Faulty Control Module Setting the Diagnostic Trouble Code (DTC), Control Module harness is open or shorted, Control Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U135B Description
What are the Possible Causes of the DTC U135B?
- Faulty Control Module Setting the Diagnostic Trouble Code (DTC)
- Control Module harness is open or shorted
- Control Module circuit poor electrical connection
How to Fix the DTC U135B?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U135B code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Need Help with the Code?
Get the U135B code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- U135B Buick — Lost Communication With Sunload Sensor
- U135B Cadillac — Lost Communication With Sunload Sensor
- U135B Chevrolet — Lost Communication With Sunload Sensor
- U135B GMC — Lost Communication With Sunload Sensor
Frequently Asked Questions about U135B Code
1. What are the common symptoms of OBDII code U135B - Lost Communication With Sunload Sensor?
- Common symptoms include inconsistent air conditioning performance, inaccurate temperature readings on the climate control system, and potential issues with the automatic climate control system.
2. What are the possible causes of the U135B OBDII code?
- The U135B code may be triggered by a faulty sunload sensor, damaged wiring or connectors leading to the sensor, a malfunctioning climate control module, or a communication error within the vehicle's network.
3. How can I diagnose the cause of the U135B code?
- Diagnosis typically involves inspecting the sunload sensor and its connections for any visible damage, testing the sensor's functionality, checking the wiring for continuity and shorts, and using a diagnostic scanner to assess communication between the sensor and the climate control module.
4. Can I drive my vehicle with the U135B code present?
- While the vehicle may still be operable with the U135B code, it is recommended to address the issue promptly to prevent potential issues with the climate control system and ensure optimal comfort while driving.
5. How can I repair the U135B code related to the Lost Communication With Sunload Sensor?
- Repair options may include replacing the sunload sensor if it is faulty, repairing or replacing damaged wiring and connectors, resetting the climate control module, and clearing the trouble code with a diagnostic scanner after addressing the root cause.
6. Are there any DIY tips for fixing the U135B code?
- DIY enthusiasts with automotive experience may attempt to inspect the sensor and wiring themselves, but for accurate diagnosis and precise repairs, it is recommended to consult a professional mechanic or technician.
7. Will resetting the trouble codes make the U135B code disappear permanently?
- Resetting the trouble codes may temporarily clear the U135B code, but if the underlying issue causing the lost communication with the sunload sensor is not resolved, the code is likely to reappear upon subsequent system checks.
8. Is the sunload sensor a critical component for vehicle safety?
- While the sunload sensor primarily affects the climate control system's performance and passenger comfort, it is not directly related to critical safety functions of the vehicle.
9. Can extreme weather conditions affect the sunload sensor and trigger the U135B code?
- Extreme heat or exposure to direct sunlight over time may affect the sunload sensor's accuracy and functionality, potentially leading to issues that trigger the U135B code.
10. How long does it typically take to repair the U135B code issue?
- The repair time for the U135B code can vary depending on the exact cause of the problem, but it may take anywhere from 1 to 3 hours for diagnosis and repair by a professional mechanic.
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